*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

:root{
    --color: #222327;
}
body{
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: var(--color);
}
.navigation{
    width: 400px;
    height: 70px;
    background: #fff;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 10px;
}
.navigation ul{
    display: flex;
    width: 350px;
}
.navigation ul li {
    position: relative;
    list-style: none;
    width: 70px;
    height: 70px;
    z-index: 1;
}
.navigation ul li a{
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    width: 100%;
    text-align: center;
    font-weight: 500;
}
.navigation ul li a .icon{
    position: relative;
    display: block;
    line-height: 75px;
    font-size: 1.5em;
    text-align: center;
    transition: 0.5s;
    color: var(--color);
}
.navigation ul li.active a .icon {
    transform: translateY(-35px);
}
.navigation ul li a .text{
    position: absolute;
    color: var(--color);
    font-weight: 400;
    font-size: 0.75em;
    letter-spacing: 0.05em;
    transition: 0.5s;
    opacity: 0;
    transform: translateY(20px);

}
.navigation ul li.active a .text{
    opacity: 1;
    transform: translateY(10px);
}

.indicator{
    position: absolute;
    top: -50%;
    width: 70px;
    height: 70px;
    background: #29fd53;
    border-radius: 50%;
    border: 6px solid var(--color);
    transition: 0.5s;
}
.indicator::before{
    content: ' ';
    position: absolute;
    top: 50%;
    left: -20px;
    /*transform: translate(-50%, -50%);*/
    width: 20px;
    height: 20px;
    background: transparent;
    border-top-right-radius: 20px;
    box-shadow: 0 -10px 0 0 var(--color);
}
.indicator::after{
    content: ' ';
    position: absolute;
    top: 50%;
    right: -20px;
    width: 20px;
    height: 20px;
    background: transparent;
    border-top-left-radius: 20px;
    box-shadow: 0 -10px 0 0 var(--color);
}

.navigation ul li:nth-child(1).active ~ .indicator{
    transform:  translateX(calc(70px * 0));
}
.navigation ul li:nth-child(2).active ~ .indicator{
    transform:  translateX(calc(70px * 1));
}
.navigation ul li:nth-child(3).active ~ .indicator{
    transform:  translateX(calc(70px * 2));
}
.navigation ul li:nth-child(4).active ~ .indicator{
    transform:  translateX(calc(70px * 3));
}
.navigation ul li:nth-child(5).active ~ .indicator{
    transform:  translateX(calc(70px * 4));
}
